618935047 has 2 divisors, whose sum is σ = 618935048. Its totient is φ = 618935046.

The previous prime is 618935039. The next prime is 618935069. The reversal of 618935047 is 740539816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618935047 - 2³ = 618935039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 618934994 and 618935012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618935147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309467523 + 309467524.

It is an arithmetic number, because the mean of its divisors is an integer number (309467524).

Almost surely, 2^618935047 is an apocalyptic number.

618935047 is a deficient number, since it is larger than the sum of its proper divisors (1).

618935047 is an equidigital number, since it uses as much as digits as its factorization.

618935047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 618935047 is about 24878.4052342589. The cubic root of 618935047 is about 852.2133994724.

The spelling of 618935047 in words is "six hundred eighteen million, nine hundred thirty-five thousand, forty-seven".